The weather's heating up, and staying hydrated is essential to staying cool in the summer heat. Our friends at the Wirecutter took an exhaustive look at reusable water bottles to find the best one around, and they've settled on the Klean Kanteen.

The Klean Kanteen has been around for awhile, and it's very popular—in fact, many of you already have one. But over at the Wirecutter, they've decided that of all the reusable water bottles out there, this one's the best. So, if you're in the market for a bottle to tote your refreshments around this summer, the Klean Kanteen is a good place to start. It comes in tons of shapes and sizes with different caps, and it's made of metal, so it isn't as likely to pick up leftover tastes and other funk from previous liquids left in there. They also have an insulated version, which is great at keeping your water cold for long periods of time. Plus you'll save a ton of money on bottled water, which is as big a scam as any if I've ever heard one.

Update: I picked up one of the insulated versions and it is easily the best water bottle I've ever owned. If you want to keep your drinks cold, even in the blazing hot sun, it will do the job awesomely well.